Evidence map›Paper›PMID 32763446›Full record

ArticleInternational journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases2020

Patterns of viral clearance in the natural course of asymptomatic COVID-19: Comparison with symptomatic non-severe COVID-19.

Jae-Sun Uhm, Jin Young Ahn, JongHoon Hyun, Yujin Sohn, Jung Ho Kim, Su Jin Jeong, Nam Su Ku, Jun Yong Choi, Yu-Kyung Park, Ho-Sung Yi and 11 more

Open access · goldAbstract readComparative Study
In one paragraph

Article in International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
1.0field-weighted citation impact, top 13% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 40 citations in OpenAlex.

  1. Pooled it
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  4. Observational
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  10. Association between cycle threshold (CJournal of medical virology · 2021
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  15. Liver injury in COVID-19: Known and unknown.World journal of clinical cases · 2021
    Review
  16. Gargling with 7.5% Sodium Bicarbonate Solution for SARS-CoV-2 Viremia Clearance: Our Institutional Clinical Experience.Indian journal of critical care medicine : peer-reviewed, official publication of Indian Society of Critical Care Medicine · 2021
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

21 authors at 3 institutions in 1 country.

Jae-Sun UhmDepartment of Internal Medicine, Yongin Severance Hospital, Yonsei University College of Medicine, 363 Dongbaekjukjeon-daero, Giheung-gu, Yongin-si, Gyeonggi-do, Republic of Korea.
Jin Young AhnDepartment of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, Republic of Korea.
JongHoon HyunDepartment of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, Republic of Korea.
Yujin SohnDepartment of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, Republic of Korea.
Jung Ho KimDepartment of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, Republic of Korea.
Su Jin JeongDepartment of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, Republic of Korea.
Nam Su KuDepartment of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, Republic of Korea.
Jun Yong ChoiDepartment of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, Republic of Korea.
Yu-Kyung ParkKorea Workers' Compensation and Welfare Services, Daegu Hospital, 515 Hakjeong-ro, Buk-gu, Daegu, Republic of Korea.
Ho-Sung YiKorea Workers' Compensation and Welfare Services, Daegu Hospital, 515 Hakjeong-ro, Buk-gu, Daegu, Republic of Korea.
Sung Kyu ParkKorea Workers' Compensation and Welfare Services, Daegu Hospital, 515 Hakjeong-ro, Buk-gu, Daegu, Republic of Korea.
Bong-Ok KimKorea Workers' Compensation and Welfare Services, Daegu Hospital, 515 Hakjeong-ro, Buk-gu, Daegu, Republic of Korea.
Hyewon KimChungju Medical Center, 239-50 Allim-ro, Chungju-si, Chungcheongbuk-do, Republic of Korea.
Jinwoo ChoiChungju Medical Center, 239-50 Allim-ro, Chungju-si, Chungcheongbuk-do, Republic of Korea.
Seung-Mo KangChungju Medical Center, 239-50 Allim-ro, Chungju-si, Chungcheongbuk-do, Republic of Korea.
Yeong Ho ChoiChungju Medical Center, 239-50 Allim-ro, Chungju-si, Chungcheongbuk-do, Republic of Korea.
Hae Kyoung YoonChungju Medical Center, 239-50 Allim-ro, Chungju-si, Chungcheongbuk-do, Republic of Korea.
Sunkyung JungMolecular Diagnostics Testing Center, Seegene Medical Foundation, 320 Cheonho-daero, Seongdong-gu, Seoul, Republic of Korea.
Hyeong Nyeon KimSamkwang Medical Laboratories, 57 Baumoi-ro 41-gil, Seocho-gu, Seoul, Republic of Korea.
Joon-Sup YeomDepartment of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, Republic of Korea. Electronic address: joonsup.yeom@yuhs.ac.
Yoon Soo ParkDepartment of Internal Medicine, Yongin Severance Hospital, Yonsei University College of Medicine, 363 Dongbaekjukjeon-daero, Giheung-gu, Yongin-si, Gyeonggi-do, Republic of Korea. Electronic address: ysparkok2@yuhs.ac.
Korea National University of Transportation · KRYonsei University · KRSeverance Hospital · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesThe aim of this study was to elucidate patterns of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) clearance in the natural course of asymptomatic coronavirus disease 2019 (COVID-19).

methodsConsecutive patients with non-severe COVID-19 were included retrospectively. Asymptomatic patients with a normal body temperature and no evidence of pneumonia throughout the disease course were assigned to the asymptomatic group. The reverse transcription PCR (RT-PCR) assay was repeated every two to five days after the first follow-up RT-PCR assay. Negative conversion was defined as two consecutive negative RT-PCR assay results within a 24-h interval. Rebound of the cycle threshold (Ct) value was defined as negative from the single RT-PCR assay and positive from the following assay.

resultsAmong a total of 396 patients identified (median age 42.5 years (interquartile range (IQR) 25.0-55.0 years), 35.6% male), 68 (17.2%) were assigned to the asymptomatic group and 328 (82.8%) to the symptomatic group. The time until negative conversion was significantly shorter in the asymptomatic group than in the symptomatic group: median 14.5 days (IQR 11.0-21.0 days) and 18.0 days (IQR 15.0-22.0 days), respectively (p = 0.001). Rebound of Ct values was observed in 78 patients (19.7%).

conclusionsTime until negative conversion is shorter in asymptomatic COVID-19 than in symptomatic COVID-19. Rebound of Ct values is not uncommon.

Indexed as

PandemicsAdultAsymptomatic DiseasesBetacoronavirusCohort StudiesCoronavirus InfectionsCOVID-19Disease ProgressionFemaleHumansMaleMiddle AgedPneumonia, ViralRepublic of KoreaRetrospective StudiesReverse Transcriptase Polymerase Chain ReactionAsymptomaticCoronavirus disease 2019COVID-19Negative conversionSARS-CoV-2Viral clearance

Identifiers

PMID32763446
PMCPMC7403105
OpenAlexW3047223046

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.